nRF52840 features and capability

[Egor Karlin]

Hello, 
We planned use nRF52840 in our project, and I have some questions about this MCU. 

1) Is it possible to process signal from 8-GPIO with frequency of request 32MHz? 
We plan use 8-bit parallel ADC with sample rate 32MHz and length of packet 1 kB. 

2) Is there a compatible RTOS, which have libraries for thise MCU ? 

Thanks in advanced 
Karlin Egor

[Jared]

1) No, this is not supported. Maxmimum sampling rate of the ADC is 200 kHz. 

2) Zephyr or freeRTOS. We have examples for FreeRTOS in the SDK.

Best regards

Jared 

[Egor Karlin]

1) Oh no, we don't plan to use embedded ADC. We have external 8-bit parallel ADC.  MCU processing possibility of 8-bit digital signal from 8 GPIO with freq 32 MHz is important for us. Is it possible?  Quantity of semples, which must be remembered and processed, is 1024. 

2) Thanks. It's very very good.

Thanks in advanced 
Karlin Egor

[Jared]

Unfortunately, the GPIO peripheral itself runs on a 16 MHz clock, which means that it can't sample a 32 MHz signal.

[Egor Karlin]

Thanks!